Sensors
Sensors are fun. Everybody likes them and everybody wants to use them. The way to use sensors is very similar to the way to use location providers: your application registers a sensor listener with a specific sensor and is notified of updates. Listing 7–15 shows how you can register a listener with the device’s accelerometer.
Listing 7–15. Registering Sensor Listener With Accelerometer
private void registerWithAccelerometer() {
SensorManager sm = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
List<Sensor> sensors = sm.getSensorList(Sensor.TYPE_ACCELEROMETER);
if (sensors != null&& ! sensors.isEmpty()) {
SensorEventListener listener = new SensorEventListener() {
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